The AC also requires a spoke-hole sealing rim strip (not speced yet) that will add weight.

Thanks, I didn't know rim tape was needed for the AC wheels. I'm not a big fan of Rim tape/strip, so that may limit my choices to the CB Cobalts, Mavic SLR's or DT Swiss Tricon's. American Classic has not returned my e-mail question. If customer service is the same as asking simple information from sales, other companies may be better for myself.

Those are the wheels we are discussing, and yes, they do require a rim strip. Unlike the previous rims, they have a proper UST-spec bead shape, but they still have spoke holes through the inner wall. AC has yet to recommend a sealing method.